Multiple sulphur isotopes reflecting atmospheric and oceanic evolution in the Archean and Paleoproterozoic

反映太古代和古元古代大气和海洋演化的多种硫同位素

• 批准号: 63055581
• 负责人: Professor Dr. Harald Strauß
• 金额: --
• 依托单位: Institut für Geologie und Paläontologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/63055581?language=en
• 关键词: Multiple; sulphur; isotopes; reflecting; atmospheric

A major advance in our understanding of the early global sulphur cycle and its intimate relation to atmospheric chemistry and biogeochemistry is anticipated from multiple sulphur isotope data measured in sedimentary sulphides and sulphates of Archean and early Paleoproterozoic age. Respective implications will be far superior to those based on the traditional 34S record. A chemostratigraphic approach, involving the simultaneous measurement of 32S, 33S, 34S, and 36S, will be applied to major pre-2000 Ma sedimentary successions in southern Africa, Western Australia and Canada. Combined temporal records of 34S, 33S, and 36S will reveal unprecedented detailed information in respect to key issues, such as temporal changes in atmospheric composition, the evolution of sulphur biogeochemistry, and the overall operational mode of the global sulphur cycle. All will further our understanding of Earth System changes during the early part of Earth’s history.

太古宙和古元古代早期沉积物硫化物和硫酸盐中测量的多种硫同位素数据预计将在我们对早期全球硫循环及其与大气化学和生物地球化学的密切关系的理解方面取得重大进展，其各自的含义将远远优于基于这些数据的含义。传统的 34S 记录 一种化学地层学方法，涉及同时测量 32S、33S、34S 和36S，将应用于南部非洲、西澳大利亚和加拿大的 2000 Ma 之前的主要沉积层序。 34S、33S 和 36S 的组合时间记录将揭示有关关键问题（例如时间变化）的详细信息。大气成分、硫生物地球化学的演变以及全球硫循环的整体运行模式都将进一步加深我们对地球系统早期变化的理解。地球的历史。